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Question:
(a) One problem encountered when designing web applications is that HTTP is a "stateless" protocol. Explain two general approaches to solve the statelessness problem.
(b) Describe how a User Control is declared in an ASP.NET page. Illustrate your answer using extract codes.
(c) Distinguish between the following ASP.NET properties:
(i) IsPostBack (ii) AutoPostBack.
(d) Prepare an ASP.NET program with the specifications given below:
(i) Create a DropDownList control declaratively with three items: Select Colour, Red and Blue
(ii) A user must not be able to submit the form if he chooses the Select Colour item
(iii) The form is only submitted if a user selects either Red or Blue
(iv) Detect the chosen colour and prints a message as follows: "Red colour chosen" or "Blue colour chosen".
Question : (a) Describe what are streams in file handling and explain what should be done when accessing data in an existing file. (b) For what purpose are StreamReader an
What is Asynchronous One-Way Calls The One-way calls are a different from the asynchronous calls by the execution angle that the .NET Framework does not assure their execution.
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What is managed code and managed data? Managed code is code that is written to target the services of the Common Language Runtime. In order to target these services, the code m
How can we connect to Microsoft Access, Foxpro , Oracle etc ? The Microsoft provides System.Data.OleDb namespace to communicate with the databases such as Oracle, scess etc. I
What are the advantages of DLR? The various advantages provided by DLR are: Permits you to easily execute the dynamic languages to the .NET Framework. Gives dynamic featu
How different are interface and abstract class in .Net? Abstract classes cannot be instantiated it can have or cannot have abstract method basically called as must inherit as t
What is the difference between "using System.Data;" and directly adding the reference from "Add References Dialog Box"? When you compiles a program using command line, u add th
What are the different locks in SQL SERVER? Depending on the transaction level there are six types of lock that can be acquired on data :- 1)Intent: The intent lock des
What is fundamental of published or precreated objects in Remoting? In the scenarios of the singleton or single call the objects are created dynamically. But in some situations
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